The vibron dressing in α-helicoidal macromolecular chains  

作　　者：D.evizovi S. Galovi A. Reshetnyak Z. Ivi 

机构地区：[1]University of Belgrade, Vina Institute of Nuclear Sciences Laboratory for Theoretical and Condensed Matter Physics,P. O. Box 522, 11001 Belgrade, Serbia [2]Joint Institute for Nuclear Research Bogoliubov Laboratory for Theoretical Physics,Dubna, Russia [3]Laboratory of Non-Linear Media Physics, Institute of Strength Physics and Materials Science,Tomsk, 634021, Russia

出　　处：《Chinese Physics B》2013年第6期218-227,共10页中国物理B（英文版）

基　　金：supported by the Science Fund of the Ministry of Education and Science of Republic of Serbia (Grant Nos. III–45005 and III–45010);by the Project within the Cooperation Agreement between the JINR, Dubna, Russian Federation;Ministry of Education and Science of Republic of Serbia

摘　　要：We present a study of the physical properties of the vibrational excitation in α-helicoidal macromolecular chains, caused by the interaction with acoustical and optical phonon modes. The influence of the temperature and the basic system parameters on the vibron dressing have been analyzed by employing the simple mean-field approach based on the variational extension of the Lang-Firsov unitary transformation. The applied approach predicts a region in system parameter space where one has an abrupt transition from a partially dressed （light and mobile） to a fully dressed （immobile） vibron state. We found that the boundary of this region depends on system temperature and the type of bond among structural elements in the macromolecular chain.We present a study of the physical properties of the vibrational excitation in α-helicoidal macromolecular chains, caused by the interaction with acoustical and optical phonon modes. The influence of the temperature and the basic system parameters on the vibron dressing have been analyzed by employing the simple mean-field approach based on the variational extension of the Lang-Firsov unitary transformation. The applied approach predicts a region in system parameter space where one has an abrupt transition from a partially dressed （light and mobile） to a fully dressed （immobile） vibron state. We found that the boundary of this region depends on system temperature and the type of bond among structural elements in the macromolecular chain.

关 键 词：vibron SMALL-POLARON Α-HELIX partial dressing 

分 类 号：O561.2[理学—原子与分子物理]